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Rotary Cooler
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ROTARY COOLER is a part of Rotary kiln system used to lower the temperature of the hot products discharged from the kiln to a temperature approaching ambient. The Rotary Cooler is installed beneath the Rotary Kiln and interconnected with the kiln discharge hood. The construction is similar to Rotary kiln with a cylindrical shell inclined to the horizontal with tyres, support rollers, feed hood and driven by girth gear & pinion. A part of the cooler shell is castable lined to take care of the shell from the hot discharge.The Rotary Cooler operates in counter-flow, the hot gases being substituted by ambient or chilled air, which is in direct contact with the hot material. For high temperature applications the material is cooled to a temperature approaching ambient by continuous water spray over the shell and operates on the principle of heat transfer through the rotating cylinder wall which is continuously irrigated by a series of external water sprays mounted over the unit. The water is partially evaporated as steam while the excess is collected from the bottom of the unit and re-circulated. The material thus cooled is discharged from the other end of the shell.
